GeoAPI.CoordinateSystems by: NetTopologySuite Team

GeoAPI.NET project provides a common framework based on OGC/ISO standards to improve interoperability among .NET GIS projects.

HtmlAgilityPack by: Simon Mourrier, Jeff Klawiter

This is an agile HTML parser that builds a read/write DOM and supports plain XPATH or XSLT (you actually don't HAVE to understand XPATH nor XSLT to use it, don't worry...). It is a .NET code library that allows you to parse "out of the web" HTML files. The parser is very tolerant with "real world" malformed HTML. The object model is very similar to what proposes System.Xml, but for HTML documents (or streams).

FluentValidation by: Jeremy Skinner

A validation library for .NET that uses a fluent interface to construct strongly-typed validation rules.

FastMember by: Marc Gravell

In .NET reflection is slow... well, kinda slow. If you need access to the members of an arbitrary type, with the type and member-names known only at runtime - then it is frankly hard (especially for DLR types). This library makes such access easy and fast.

HarfBuzzSharp.NativeAssets.Linux by: Microsoft

HarfBuzzSharp is a cross-platform OpenType text shaping engine for .NET platforms.

Google.Apis by: Google Inc.

Google APIs Client Library (Contact me whenever new versions are available!)

Fody by: The Fody Team

Extensible tool for weaving .net assemblies.

GoogleCaptchaComponent by: Babak Taremi

A comprehensive Blazor component for Google reCAPTCHA integration. Supports both v2 and v3, server-side validation, multiple themes, and works with Blazor Server and WebAssembly.

GemBox.Spreadsheet by: GemBox

GemBox.Spreadsheet is a .NET component that enables you to read, write, convert, and print spreadsheet files (XLSX, XLS, XLSB, CSV, HTML, and ODS) from .NET applications. With GemBox.Spreadsheet you get a fast and reliable component that's easy to use and doesn't depend on Microsoft Excel. It requires only .NET and it's much faster than Microsoft Office Automation!

Grpc.Net.Client by: The gRPC Authors

.NET client for gRPC

gherkin by: aslakhellesoy

A fast lexer and parser for the Gherkin language based on Ragel

GeoAPI by: NetTopologySuite Team

GeoAPI.NET project provides a common framework based on OGC/ISO standards to improve interoperability among .NET GIS projects.

ExcelNumberFormat by: ExcelNumberFormat developers

.NET library to parse ECMA-376 number format strings and format values like Excel and other spreadsheet softwares.

Grpc.Core by: The gRPC Authors

C# implementation of gRPC based on native gRPC C-core library. Note that the Grpc.Core implementation of gRPC for C# is in maintenance mode and will be replaced by grpc-dotnet in the future. See https://grpc.io/blog/grpc-csharp-future/ for details.

GeoAPI.Core by: NetTopologySuite Team and Fabrício Godoy

GeoAPI.NET project provides a common framework based on OGC/ISO standards to improve interoperability among .NET GIS projects.

Gee.External.Capstone by: Ahmed Garhy (@9ee1)

Capstone.NET is an opinionated .NET Core and a .NET Framework binding for the Capstone disassembly framework. It is written in C#, supports Capstone 4, and has a friendly and simple type safe API that is ridiculously easy to learn and quick to pick up.

Grpc.Net.Common by: The gRPC Authors

Infrastructure for common functionality in gRPC

Grpc.Core.Api by: The gRPC Authors

gRPC C# Surface API

Google.Protobuf by: Google Inc.

C# runtime library for Protocol Buffers - Google's data interchange format.

Humanizer by: Claire Novotny, Mehdi Khalili

Humanizer meets all your .NET needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities